Add compat to Crashpad

crashpad.doxy.h

Index: crashpad.doxy.h
diff --git a/crashpad.doxy.h b/crashpad.doxy.h
new file mode 100644
index 0000000000000000000000000000000000000000..f4dc58d6cc65861b3eb4070d741d592a238ce9e5
--- /dev/null
+++ b/crashpad.doxy.h
@@ -0,0 +1,21 @@
+// Copyright 2014 The Crashpad Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#error This file is not intended to be #included.
+
+//! \namespace crashpad
+//! \brief The main namespace.
+
+//! \namespace crashpad::internal
+//! \brief The internal namespace, not for public use.